A monitoring system and monitoring method for manhole covers

Abstract

The present invention discloses a monitoring system for manhole covers, which includes a monitoring device and a monitoring platform wirelessly connected to the monitoring device. The monitoring device includes a body, a movement detection unit disposed at the end of the body facing the manhole cover, and a sensor unit disposed at the end of the body facing away from the manhole cover. A control main board is provided in the body, and the control main board is connected to the movement detection unit and the sensor unit, and is configured to receive the data monitored by the movement detection unit and the sensor unit and transmit the data to the monitoring platform. The body further includes a switch, which is used to conduct the circuit in the monitoring device. The switch is pre-disposed in the body when the monitoring device is assembled, and the switch remains in an open state in the body. The system has a simple structure, is applicable to various scenarios, and has a high correct rate for judging the state of the manhole cover.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a monitoring system and a monitoring method for manhole covers. Background Art

[0002] Currently, in order to keep the urban environment clean and beautiful, it is not advisable to use the traditional exposed joint layout method for various cables. However, due to the increasing dependence of people on communication, electricity, etc., higher requirements are put forward for related infrastructure. Therefore, using the pipelines of the underground drainage system for telecommunications layout has become an economical means. Thus, the management of pipelines is one of the key points in the current urban security field. Currently, the problems caused by pipelines mainly include: First, the pipeline resources are illegally occupied, and the cables and facilities in the pipelines are often stolen and damaged; Second, the manhole covers are stolen or removed and not discovered in time, resulting in people and vehicles falling into them and causing casualties and other accidents. In the existing manhole cover monitoring systems, the manhole cover detectors cannot adapt to diverse manhole covers, and are prone to damage and misjudgment during use. Summary of the Invention

[0003] The purpose of the present invention is to provide a monitoring system for manhole covers, which has a simple structure, is applicable to various scenarios and a variety of manhole covers, and avoids misjudgment of the monitoring platform through dual monitoring.

[0004] To achieve the above object, the technical solution adopted by the present invention is: A monitoring system for manhole covers, including a monitoring device and a monitoring platform wirelessly connected to the monitoring device. The monitoring device includes a body, a movement detection unit disposed at the end of the body facing the manhole cover, and a sensor unit disposed at the end of the body facing away from the manhole cover;

[0005] The movement detection unit abuts against the manhole cover and is used to judge the opening and closing state of the manhole cover;

[0006] The sensor unit is disposed in the pipeline and is used to monitor the environmental data in the pipeline;

[0007] A control main board is disposed in the body, and the control main board is connected to the movement detection unit and the sensor unit, and is used to receive the data monitored by the movement detection unit and the sensor unit and transmit the data to the monitoring platform;

[0008] A switch is further included in the body, and the switch is used to conduct the circuit in the monitoring device. The switch is pre-disposed in the body when the monitoring device is assembled, and the switch remains in an open state in the body.

[0009] In the above technical solution, the abnormal movement detection unit includes a housing, a microswitch disposed inside the housing, a first spring, and a force transmission component; the lower end of the force transmission component is correspondingly disposed with the trigger head of the microswitch, and the upper end of the force transmission component is connected to the lower end of the first spring; the first spring extends out of the housing, and the upper end of the first spring is used to abut against the lower side of the manhole cover.

[0010] In the above technical solution, the force transmission component includes a spring seat and a mechanical pressure rod which are separately arranged. The spring seat has a protruding portion through which the lower end of the first spring passes, and the upper part of the mechanical pressure rod is connected to the lower part of the spring seat.

[0011] In the above technical solution, the mechanical pressure rod has a horizontal portion extending in the horizontal direction and connected to the lower part of the spring seat and a vertical portion extending in the vertical direction. The abnormal movement detection unit includes a second spring. The upper end of the second spring is connected to the lower end of the horizontal portion, and the lower end of the second spring is connected to the housing.

[0012] In the above technical solution, a limit seat with a limit groove is arranged inside the housing. The mechanical pressure rod is arranged in the limit groove of the limit seat, and the limit groove extends in the vertical direction.

[0013] In the above technical solution, a spring rubber sleeve is sleeved outside the first spring, and the spring rubber sleeve is fixed on the housing through a positioning ring.

[0014] In the above technical solution, the switch includes a magnetic control device and a conduction device; the magnetic control device includes a magnet and a fixing member, and the magnet can be hidden and arranged inside the fixing member; the conduction device includes a conduction housing and two reed pieces arranged inside the conduction housing. The two reed pieces can be connected under the action of the magnetic field formed by the magnet.

[0015] In the above technical solution, an opening is provided at the bottom end of the fixing member, and the magnet can enter the fixing member from the opening and be fixed inside the fixing member.

[0016] In the above technical solution, the sensor unit includes an air sensor for detecting the air in the pipeline, a humidity sensor for detecting the humidity in the pipeline, and a liquid level sensor for detecting the liquid level in the pipeline.

[0017] A monitoring method for a monitoring system for a manhole cover includes:

[0018] Judging whether the manhole cover is subjected to external force according to the data obtained by the abnormal movement detection unit;

[0019] Judging whether the position of the manhole cover has moved according to the data obtained by the sensor unit;

[0020] The conclusion that the manhole cover is separated from the wellhead is drawn from the fact that the manhole cover is subjected to external forces and its position moves. Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0021] 1. In the monitoring device of the present invention, it includes a main body, a movement detection unit arranged at the end of the main body facing the manhole cover, and a sensor unit arranged at the end of the main body facing away from the manhole cover. The main body, the movement detection unit and the sensor unit are arranged in a split structure, which is convenient for replacement under different manhole covers or different environments, and is also convenient for later maintenance and replacement, reducing costs; the movement detection unit abuts against the manhole cover to judge whether the manhole cover is opened by external forces, and the sensor unit is used to detect the environmental data in the pipeline. Moreover, a switch is also included in the main body. The switch is pre-placed in the main body when the monitoring device is assembled, which has the function of a concealed switch. For thieves, it is impossible to know the switch and pause the operation of the monitoring device. Therefore, the monitoring device can always be in an open state after assembly, and the monitoring platform can obtain the data detected by the monitoring device in real time, and will not interrupt the detection of the monitoring platform due to malicious shutdown and cannot make further judgments.

[0022] 2. The movement detection unit includes a housing, a microswitch, a first spring and a force transmission component arranged in the housing. The lower end of the force transmission component is correspondingly arranged with the trigger head of the microswitch, the upper end of the force transmission component is connected to the lower end of the first spring, the first spring extends out of the housing, and the upper end of the first spring is used to abut against the lower side of the manhole cover. Using the first spring instead of the traditional lever form or inclination sensing form, the movement detection unit can be applied to a variety of different manhole covers, and will not be restricted by the opening method of the manhole cover and the direction of the pressure received. Using the elastic force of the first spring, when the manhole cover is subjected to forces in an uncertain direction, it can play a protective role for the device. At the same time, the spring can also play the role of transmitting force to trigger the microswitch.

[0023] 3. The force transmission component includes a spring seat and a mechanical pressure rod arranged separately. The structure is simple and the installation is convenient. A second spring is sleeved on the mechanical pressure rod. The upper end of the second spring is connected to the lower end of the horizontal part, and the lower end of the second spring is connected to the housing. The second spring is provided so that when the manhole cover is accidentally touched and the manhole cover quickly resets, the second spring provides an upward reset force to the force transmission component, thereby resetting the microswitch.

[0024] 4. A limit seat with a limit groove is arranged in the housing, and the mechanical pressure rod is arranged in the limit groove of the limit seat. The limit groove extends in the vertical direction and is oppositely arranged with the opening on the housing, so that the mechanical pressure rod moves in the housing in a preset direction, avoiding the mechanical pressure rod tilting and getting stuck in the housing and unable to move further during the movement process.

[0025] 5. The first spring is sleeved with a spring rubber sleeve, which is fixed on the housing through a positioning ring. The spring rubber sleeve can play a role in dust and waterproof protection, protecting the internal structure of the abnormal movement detection unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the monitoring device of the present invention Figure 1 ;

[0027] Figure 2 is a schematic structural diagram of the monitoring device of the present invention Figure 2 ;

[0028] Figure 3 is a schematic structural diagram of the monitoring device of the present invention Figure 3 ;

[0029] Figure 4 is a schematic structural diagram of the abnormal movement detection unit of the present invention;

[0030] Wherein: 1, body; 2, abnormal movement detection unit; 3, sensor unit; 4, control main board; 5, switch; 6, housing; 7, micro switch; 8, first spring; 9, spring seat; 10, mechanical pressure rod; 11, convex part; 12, horizontal part; 13, vertical part; 14, second spring; 15, limit seat; 16, spring rubber sleeve; 17, positioning ring; 18, magnetic control device; 19, conduction device; 20, fixing part; 21, conduction housing; 22, reed; 23, air sensor; 24, humidity sensor; 25, liquid level sensor; 26, waterproof breather. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The present invention will be further described below with reference to the drawings and embodiments:

[0032] Embodiment 1: Refer to Figures 1 to 4 As shown, a monitoring system for a manhole cover includes a monitoring device and a monitoring platform wirelessly connected to the monitoring device. The monitoring device includes a body 1, an abnormal movement detection unit 2 disposed at the end of the body 1 facing the manhole cover, and a sensor unit 3 disposed at the end of the body 1 facing away from the manhole cover;

[0033] The abnormal movement detection unit 2 abuts against the manhole cover for judging the opening and closing state of the manhole cover;

[0034] The sensor unit 3 is disposed in the pipeline for monitoring the environmental data in the pipeline;

[0035] A control main board 4 is disposed in the body 1. The control main board 4 is connected to the abnormal movement detection unit 2 and the sensor unit 3 for receiving the data monitored by the abnormal movement detection unit 2 and the sensor unit 3 and transmitting the data to the monitoring platform;

[0036] The body 1 further includes a switch 5 for conducting the circuit in the monitoring device. The switch 5 is pre - placed in the body 1 during the assembly of the monitoring device and remains in an open state within the body 1. The switch 5 is concealed to prevent it from being maliciously closed, which may interrupt the detection of the monitoring platform and affect the judgment of the manhole cover status.

[0037] The body 1, the abnormal movement detection unit 2, and the sensor unit 3 are set as a split structure, which is convenient for replacement under different manhole covers or different environments, and is also convenient for later maintenance and replacement, reducing costs.

[0038] To extend the service life of the abnormal movement detection unit 2, without being restricted by the manhole cover opening method and the influence of the compression direction, the abnormal movement detection unit 2 includes a housing 6, a micro - switch 7, a first spring 8, and a force - transmitting component arranged in the housing 6; the lower end of the force - transmitting component corresponds to the trigger head of the micro - switch 7, and the upper end of the force - transmitting component is connected to the lower end of the first spring 8; the first spring 8 extends out of the housing 6, and the upper end of the first spring 8 is used to abut against the lower side of the manhole cover, as shown in Figure 4 shown.

[0039] as shown in Figure 4 shown, the force - transmitting component includes a spring seat 9 and a mechanical pressure rod 10 which are separately arranged. The spring seat 9 has a protrusion 11 through which the lower end of the first spring 8 passes, and the upper part of the mechanical pressure rod 10 is connected to the lower part of the spring seat 9.

[0040] as shown in Figure 4 shown, the mechanical pressure rod 10 has a horizontal part 12 extending in the horizontal direction and connected to the lower part of the spring seat 9 and a vertical part 13 extending in the vertical direction. The abnormal movement detection unit 2 includes a second spring 14, the upper end of the second spring 14 is connected to the lower end of the horizontal part 12, and the lower end of the second spring 14 is connected to the housing 6.

[0041] During the movement of the mechanical pressure rod 10 in the housing 6, due to the uncertainty of the force direction, the mechanical pressure rod 10 may tilt and get stuck in the housing 6 and cannot be used continuously. Therefore, to avoid the above situation, a limit seat 15 with a limit groove is arranged in the housing 6, the mechanical pressure rod 10 is arranged in the limit groove of the limit seat 15, and the limit groove extends in the vertical direction.

[0042] as shown in Figure 4 shown, a spring rubber sleeve 16 is sleeved outside the first spring 8, and the spring rubber sleeve 16 is fixed on the housing 6 through a positioning ring 17. The spring rubber sleeve 16 can play a role in dust and waterproof protection, protecting the internal structure of the abnormal movement detection unit 2.

[0043] See Figure 3 As shown, the switch 5 includes a magneto - control device 18 and a conduction device 19; the magneto - control device 18 includes a magnet and a fixing member 20, and the magnet can be hidden inside the fixing member 20; the conduction device 19 includes a conduction housing 21 and two reed switches 22 arranged inside the conduction housing 21, and the two reed switches 22 can be connected under the action of the magnetic field formed by the magnet.

[0044] In order to further hide the switch 5, an opening is provided at the bottom end of the fixing member 20, and the magnet can enter the fixing member 20 through the opening and be fixed inside the fixing member 20.

[0045] See Figure 2 As shown, the sensor unit 3 includes an air sensor 23 for detecting the air inside the pipeline, a humidity sensor 24 for detecting the humidity inside the pipeline, and a liquid - level sensor 25 for detecting the liquid level inside the pipeline.

[0046] See Figure 2 As shown, a waterproof breather 26 is provided at the bottom end inside the monitoring device.

[0047] A monitoring method for a monitoring system used for a manhole cover includes:

[0048] The monitoring platform determines whether the manhole cover is subjected to an external force by observing the data obtained by the abnormal movement detection unit 2. If the micro - switch 7 is turned on, it indicates that the manhole cover is under pressure;

[0049] The monitoring platform observes the data detected by the air sensor 23, the humidity sensor 24, and the liquid - level sensor 25. If the detected data changes significantly, it indicates that the position of the monitoring device has moved;

[0050] When it is obtained that the manhole cover is under pressure, the micro - switch 7 is turned on, and the data of the sensor unit 3 changes significantly, the conclusion that the manhole cover is separated from the wellhead is obtained.

[0051] During the use of the monitoring device, the switch 5 is always in the open state. Therefore, no matter what state the manhole cover is in, the monitoring platform can obtain data in real - time, and by using double - judgment, the correctness of the conclusion is ensured.

[0052] The above - mentioned embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A monitoring system for manhole covers, comprising a monitoring device and a monitoring platform wirelessly connected to the monitoring device, characterized in that: The monitoring device includes a main body, a movement detection unit disposed at the end of the main body facing the manhole cover, and a sensor unit disposed at the end of the main body facing away from the manhole cover; The movement detection unit abuts against the manhole cover and is used to judge the opening and closing state of the manhole cover; the sensor unit is disposed in the pipeline and is used to monitor the environmental data in the pipeline; A control main board is provided in the main body. The control main board is connected to the movement detection unit and the sensor unit, and is used to receive the data monitored by the movement detection unit and the sensor unit and transmit the data to the monitoring platform; A switch is further included in the main body. The switch is used to conduct the circuit in the monitoring device. The switch is pre-disposed in the main body during the assembly of the monitoring device, and the switch remains in an open state in the main body; The movement detection unit includes a housing, a micro switch, a first spring and a force transmission component disposed in the housing; the lower end of the force transmission component is correspondingly disposed with the trigger head of the micro switch, and the upper end of the force transmission component is connected to the lower end of the first spring; the first spring extends out of the housing, and the upper end of the first spring is used to abut against the lower side of the manhole cover; The force transmission component includes a spring seat and a mechanical pressure rod which are separately arranged. The spring seat has a convex portion through which the lower end of the first spring passes, and the upper part of the mechanical pressure rod is connected to the lower part of the spring seat; The mechanical pressure rod has a horizontal portion extending in the horizontal direction and connected to the lower part of the spring seat and a vertical portion extending in the vertical direction. The movement detection unit includes a second spring. The upper end of the second spring is connected to the lower end of the horizontal portion, and the lower end of the second spring is connected to the housing; A limit seat with a limit groove is disposed in the housing. The mechanical pressure rod is disposed in the limit groove of the limit seat, and the limit groove extends in the vertical direction.

2. The monitoring system for manhole covers according to claim 1, characterized in that: A spring rubber sleeve is sleeved outside the first spring, and the spring rubber sleeve is fixed on the housing through a positioning ring.

3. The monitoring system for manhole covers according to claim 1, characterized in that: The switch includes a magnetic control device and a conduction device; the magnetic control device includes a magnet and a fixing member, and the magnet can be hidden in the fixing member; the conduction device includes a conduction housing and two reed pieces disposed in the conduction housing. The two reed pieces can be connected under the action of the magnetic field formed by the magnet.

4. The monitoring system for manhole covers according to claim 3, characterized in that: An opening is provided at the bottom end of the fixing member, and the magnet can enter the fixing member from the opening and be fixed in the fixing member.

5. The monitoring system for manhole covers according to claim 1, characterized in that: The sensor unit includes an air sensor for detecting the air in the pipeline, a humidity sensor for detecting the humidity in the pipeline, and a liquid level sensor for detecting the liquid level in the pipeline.

6. The monitoring method of the monitoring system for manhole covers according to claim 1, comprising: Judge whether the manhole cover is subjected to external force according to the data obtained by the movement detection unit; Judge whether the position of the manhole cover has moved according to the data obtained by the sensor unit; Draw the conclusion that the manhole cover is separated from the wellhead from the fact that the manhole cover is subjected to external force and the position of the manhole cover has moved.

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